EP 3863112 A4 20211201 - DIELECTRIC FILTER AND COMMUNICATION DEVICE
Title (en)
DIELECTRIC FILTER AND COMMUNICATION DEVICE
Title (de)
DIELEKTRISCHER FILTER UND KOMMUNIKATIONSVORRICHTUNG
Title (fr)
FILTRE DIÉLECTRIQUE ET DISPOSITIF DE COMMUNICATION
Publication
Application
Priority
- CN 2018113135 W 20181031
- CN 2019114898 W 20191031
Abstract (en)
[origin: EP3863112A1] Embodiments of this application provide a dielectric filter and a communications device, and relate to the field of wireless communications device technologies. The dielectric filter includes a dielectric block. At least two resonant through holes that are parallel to each other are provided in the dielectric block. The resonant through hole is a stepped hole. The stepped hole includes a stepped large hole and a stepped small hole that are arranged coaxially and that are in communication. The stepped small hole passes through a first surface of the dielectric block. The stepped large hole passes through a second surface of the dielectric block. A stepped surface is formed between the stepped large hole and the stepped small hole. The surfaces of the dielectric block are covered with conductor layers. The conductor layers cover the surfaces of the dielectric block and inner walls of the stepped large hole and the stepped small hole. A conductor layer of the inner wall of the stepped large hole is short-circuited with a conductor layer of the second surface. A conductor layer of the inner wall of the stepped small hole is short-circuited with a conductor layer of the first surface. A loop gap that does not cover the conductor layers is provided on the stepped surface. The loop gap is arranged around the stepped small hole.
IPC 8 full level
H01P 1/205 (2006.01); H01P 7/04 (2006.01)
CPC (source: EP US)
H01P 1/2002 (2013.01 - US); H01P 1/2056 (2013.01 - EP US); H01P 1/2084 (2013.01 - US); H01P 7/04 (2013.01 - EP US); H01P 7/10 (2013.01 - US)
Citation (search report)
- [XYI] US 4757284 A 19880712 - UENO MORIAKI [JP]
- [YP] CN 110148819 A 20190820 - COMBA TELECOM TECH GUANGZHOU, et al
- [Y] EP 2993727 A1 20160309 - HUAWEI TECH CO LTD [CN]
- See references of WO 2020088620A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3863112 A1 20210811; EP 3863112 A4 20211201; CN 112889182 A 20210601; CN 112889182 B 20220902; US 11509030 B2 20221122; US 2021249746 A1 20210812; WO 2020087378 A1 20200507; WO 2020088620 A1 20200507
DOCDB simple family (application)
EP 19878299 A 20191031; CN 2018113135 W 20181031; CN 2019114898 W 20191031; CN 201980069018 A 20191031; US 202117244408 A 20210429